4BAR vs Vocal Ninja
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
4BAR
Easily create and share short-form rap videos with this intuitive music studio app. Write lyrics, record vocals and video with on-screen teleprompters, and export polished content for social media.
- Choose from a library of beats
- In-app notepad for lyric writing
- Record video with on-screen lyrics
- Automated audio/video syncing
- Shareable vertical video output
- Track rap stats and streaks
- Unlock 8-bar and 16-bar formats
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4BAR turns inspiration into a finished, shareable video in minutes instead of hours. Choose a beat, write your bars, record your video, share it. That's it. The 4-bar format is for everyone. For beginners: Short enough that anyone can make one, and it's a great way to build your skills. For experienced artists, it's a different kind of challenge: saying more with less. All the time-consuming work that usually stands between an idea and a finished video — recording audio and video separately, syncing to the beat, putting lyrics on screen — 4BAR handles for you. You get to focus on what really matters: the BARS. CHOOSE YOUR BEAT Browse a library of dope beats ranging all styles. WRITE YOUR BARS Put all your thoughts down in the notepad while the beat loops forever, so you never get interrupted. Save your lyrics and pick up right where you left off. RECORD YOUR BARS Capture your video with your lyrics directly on screen, teleprompter-style. No memorization needed. SHARE YOUR BARS Your video comes out with animated lyrics, clean audio, and a vertical frame built for social. Post it to the platform of your choice, or send it straight to a friend. YOUR BARS BY THE NUMBERS Create a video every day to build your streak, and track your stats covering bars, beats, and app usage. UNLOCK MORE BARS Unlock 8-bar and 16-bar formats with a 4BAR subscription. Same effortless workflow, more room to rap.
Vocal Ninja
This app allows you to record your voice with real-time audio effects, including auto-tune, harmony, and vocoding. Create remixes, import your own beats, and share your songs and videos with a community of other musicians.
- Real-time voice processing
- Auto Audio Tune and harmony
- Vocoding effects
- Remix Panel for creating beats
- Import personal beats
- Export songs and videos
- User profiles and community interaction
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** NEW: Create your own remixes and beats in Remix Panel! ** Create your own remixes with remix packages which is created just for you. Import them to the Studio easily and share it on your profile to impress your friends! A portable studio in your pocket? Vocal Ninja is a real-time voice-processing app that combines "AUTO Audio Tune", harmony, and vocoding. Sing your songs and apply industrial standard effects on your voice and video simultaneously! Huge beat library created just for you by top talented beatmakers. Import your personal beats to the studio! Export your songs and videos and upload it to your profile! Discover other talented people just like you and become friends! Do you have talent and are you waiting to be discovered? Vocal Ninja was made just for that! FEATURES • Sing like a pro! Use our high quality simultaneous effect to make your voice perfect! * Huge beat library in different categories. * Create your profile and discover other people. • Export your songs easily. • Watch amazing covers, like, comment and interact with other people. Need our help? We are here for you! Contact us at vocalninja.com NOTE: All beats, resources and designs contained in the Vocal Ninja application are the sole property of Mobile Victory and are protected under copyright and intellectual property laws. Any unauthorised use or breach of our copyright may result in legal consequences. About subscriptions: Some of our beats and studio effects needs VIP subscription. After starting a subscription, you will able to use the app without any ads and without a restriction. Subscription period is (one) 1 week or (one) 1 month or (one) 1 year. In every renewal period, your subscription renews for the amount of your selected package. You will see the total amount in the app when you select a package. Payment will be charged to your iTunes account during confirmation of purchase. Subscriptions automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period, and the cost of the renewal will be identified as well. Subscriptions may be managed by the user and auto-renewal may be turned off in the user's Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Privacy policy: https://vocalninja.com/privacy.php Term of use: https://vocalninja.com/tos.php
Screenshots
Verdict
The clearest difference is update cadence: Vocal Ninja at weekly against 4BAR's every 3 months. Vocal Ninja also leads on iOS requirement (12.0 vs 16.0). 4BAR's advantage is ratings volume (912 vs 57) and review sentiment (88% vs 80%). On price, rating, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. 4BAR sells 8 in-app purchases, starting at $1.99 per month and Vocal Ninja sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.7 for 4BAR against 4.6 for Vocal Ninja. That said, the two scores are not equally well evidenced: 4BAR has 912 ratings behind it against 57, so its average is the more settled of the two. Written reviews are what separate them: 88% of 4BAR's written reviews are positive against 80% of Vocal Ninja's.
4BAR ships an update every 3 months, Vocal Ninja weekly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | 4BAR | Vocal Ninja |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (912 ratings) — better | 4.6 (57 ratings) |
| Positive reviews | 88.2% of reviews — better | 80.0% of reviews |
| Number of ratings | 912 — better | 57 |
| Update frequency | Every 3 months | Weekly — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 113 MB | 109 MB |
| Age rating | 12+ | 4+ |
| Developer | 4bar Entertainment Inc. | Mobile Victory |
Customer experience
4BAR
Vocal Ninja
Bugs and requests
4BAR
Reported bugs
2 issues- Errors when trying to submit 4-bar recordings
- Compatibility issues on older devices
Requested features
3 requests- Add video recording and editing capabilities
- Improve audio quality and sync
- Provide more beat and instrumental options
Vocal Ninja
Not enough reviews yet to summarise bugs or requests.
In-app purchases
4BAR
- 8BAR$1.991 Month
- 8BAR & 16BAR$2.991 Month
- 8BAR$4.993 Months
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- 8BAR & 16BAR$7.493 Months
- 8BAR14 Days trial$7.996 Months
- 8BAR & 16BAR14 Days trial$11.996 Months
- 8BAR14 Days trial$13.991 Year
- 8BAR & 16BAR14 Days trial$20.991 Year
Vocal Ninja
- Unlimited Access$1.997 Days
- Unlimited Access.3 Days trial$4.991 Month
- Unlimited Access$24.991 Year








